Measurement of the multiple-muon charge ratio in the MINOS Far Detector
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2016
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The charge ratio, Rμ ¼ Nμþ =Nμ− , for cosmogenic multiple-muon events observed at an underground
depth of 2070 mwe has been measured using the magnetized MINOS Far Detector. The multiple-muon
events, recorded nearly continuously from August 2003 until April 2012, comprise two independent data
sets imaged with opposite magnetic field polarities, the comparison of which allows the systematic
uncertainties of the measurement to be minimized. The multiple-muon charge ratio is determined to be
Rμ ¼ 1.104 0.006ðstatÞþ0.009 −0.010 ðsystÞ. This measurement complements previous determinations of single muon and multiple-muon charge ratios at underground sites and serves to constrain models of cosmic-ray
interactions at TeV energies.
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ADAMSON, P. et al. Measurement of the multiple-muon charge ratio in the MINOS Far Detector. Physical Review D, Washington, v. 93, n. 5, e052017, 2016. DOI: 10.1103/PhysRevD.93.052017. Disponível em: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.93.052017. Acesso em: 16 maio 2023.